user
Describe in your own words what is cosine similarity.


assistant
Cosine similarity is a measure of similarity between two vectors, usually in a multi-dimensional space. It quantifies how closely two vectors point in the same direction and is based on the dot product of the two vectors. It takes values between 0 and 1, with 1 indicating perfect similarity. It is often used in information retrieval, machine translation, and natural language processing tasks.